#include "hw/s390x/ebcdic.h"
#include "ipl.h"
#include "qemu/error-report.h"
+#include "qemu/config-file.h"
+#include "qemu/cutils.h"
+#include "qemu/option.h"
+#include "exec/exec-all.h"
#define KERN_IMAGE_START 0x010000UL
+#define LINUX_MAGIC_ADDR 0x010008UL
#define KERN_PARM_AREA 0x010480UL
#define INITRD_START 0x800000UL
#define INITRD_PARM_START 0x010408UL
-#define INITRD_PARM_SIZE 0x010410UL
#define PARMFILE_START 0x001000UL
#define ZIPL_IMAGE_START 0x009000UL
#define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64)
static void s390_ipl_realize(DeviceState *dev, Error **errp)
{
S390IPLState *ipl = S390_IPL(dev);
- uint64_t pentry = KERN_IMAGE_START;
+ uint32_t *ipl_psw;
+ uint64_t pentry;
+ char *magic;
int kernel_size;
Error *err = NULL;
goto error;
}
- bios_size = load_elf(bios_filename, bios_translate_addr, &fwbase,
+ bios_size = load_elf(bios_filename, NULL,
+ bios_translate_addr, &fwbase,
&ipl->bios_start_addr, NULL, NULL, 1,
EM_S390, 0, 0);
if (bios_size > 0) {
}
if (ipl->kernel) {
- kernel_size = load_elf(ipl->kernel, NULL, NULL, &pentry, NULL,
+ kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL,
+ &pentry, NULL,
NULL, 1, EM_S390, 0, 0);
if (kernel_size < 0) {
kernel_size = load_image_targphys(ipl->kernel, 0, ram_size);
- }
- if (kernel_size < 0) {
- error_setg(&err, "could not load kernel '%s'", ipl->kernel);
- goto error;
+ if (kernel_size < 0) {
+ error_setg(&err, "could not load kernel '%s'", ipl->kernel);
+ goto error;
+ }
+ /* if this is Linux use KERN_IMAGE_START */
+ magic = rom_ptr(LINUX_MAGIC_ADDR, 6);
+ if (magic && !memcmp(magic, "S390EP", 6)) {
+ pentry = KERN_IMAGE_START;
+ } else {
+ /* if not Linux load the address of the (short) IPL PSW */
+ ipl_psw = rom_ptr(4, 4);
+ if (ipl_psw) {
+ pentry = be32_to_cpu(*ipl_psw) & 0x7fffffffUL;
+ } else {
+ error_setg(&err, "Could not get IPL PSW");
+ goto error;
+ }
+ }
}
/*
* Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the
* loader) and it won't work. For this case we force it to 0x10000, too.
*/
if (pentry == KERN_IMAGE_START || pentry == 0x800) {
+ char *parm_area = rom_ptr(KERN_PARM_AREA, strlen(ipl->cmdline) + 1);
ipl->start_addr = KERN_IMAGE_START;
/* Overwrite parameters in the kernel image, which are "rom" */
- strcpy(rom_ptr(KERN_PARM_AREA), ipl->cmdline);
+ if (parm_area) {
+ strcpy(parm_area, ipl->cmdline);
+ }
} else {
ipl->start_addr = pentry;
}
if (ipl->initrd) {
ram_addr_t initrd_offset;
int initrd_size;
+ uint64_t *romptr;
initrd_offset = INITRD_START;
while (kernel_size + 0x100000 > initrd_offset) {
* we have to overwrite values in the kernel image,
* which are "rom"
*/
- stq_p(rom_ptr(INITRD_PARM_START), initrd_offset);
- stq_p(rom_ptr(INITRD_PARM_SIZE), initrd_size);
+ romptr = rom_ptr(INITRD_PARM_START, 16);
+ if (romptr) {
+ stq_p(romptr, initrd_offset);
+ stq_p(romptr + 1, initrd_size);
+ }
}
}
/*
DEFINE_PROP_END_OF_LIST(),
};
+static void s390_ipl_set_boot_menu(S390IPLState *ipl)
+{
+ QemuOptsList *plist = qemu_find_opts("boot-opts");
+ QemuOpts *opts = QTAILQ_FIRST(&plist->head);
+ const char *tmp;
+ unsigned long splash_time = 0;
+
+ if (!get_boot_device(0)) {
+ if (boot_menu) {
+ error_report("boot menu requires a bootindex to be specified for "
+ "the IPL device");
+ }
+ return;
+ }
+
+ switch (ipl->iplb.pbt) {
+ case S390_IPL_TYPE_CCW:
+ /* In the absence of -boot menu, use zipl parameters */
+ if (!qemu_opt_get(opts, "menu")) {
+ ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_ZIPL;
+ return;
+ }
+ break;
+ case S390_IPL_TYPE_QEMU_SCSI:
+ break;
+ default:
+ if (boot_menu) {
+ error_report("boot menu is not supported for this device type");
+ }
+ return;
+ }
+
+ if (!boot_menu) {
+ return;
+ }
+
+ ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_CMD;
+
+ tmp = qemu_opt_get(opts, "splash-time");
+
+ if (tmp && qemu_strtoul(tmp, NULL, 10, &splash_time)) {
+ error_report("splash-time is invalid, forcing it to 0");
+ ipl->qipl.boot_menu_timeout = 0;
+ return;
+ }
+
+ if (splash_time > 0xffffffff) {
+ error_report("splash-time is too large, forcing it to max value");
+ ipl->qipl.boot_menu_timeout = 0xffffffff;
+ return;
+ }
+
+ ipl->qipl.boot_menu_timeout = cpu_to_be32(splash_time);
+}
+
+static CcwDevice *s390_get_ccw_device(DeviceState *dev_st)
+{
+ CcwDevice *ccw_dev = NULL;
+
+ if (dev_st) {
+ VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *)
+ object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent),
+ TYPE_VIRTIO_CCW_DEVICE);
+ if (virtio_ccw_dev) {
+ ccw_dev = CCW_DEVICE(virtio_ccw_dev);
+ } else {
+ SCSIDevice *sd = (SCSIDevice *)
+ object_dynamic_cast(OBJECT(dev_st),
+ TYPE_SCSI_DEVICE);
+ if (sd) {
+ SCSIBus *bus = scsi_bus_from_device(sd);
+ VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus);
+ VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw,
+ vdev);
+
+ ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw),
+ TYPE_CCW_DEVICE);
+ }
+ }
+ }
+ return ccw_dev;
+}
+
static bool s390_gen_initial_iplb(S390IPLState *ipl)
{
DeviceState *dev_st;
+ CcwDevice *ccw_dev = NULL;
dev_st = get_boot_device(0);
if (dev_st) {
- VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *)
- object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent),
- TYPE_VIRTIO_CCW_DEVICE);
+ ccw_dev = s390_get_ccw_device(dev_st);
+ }
+
+ /*
+ * Currently allow IPL only from CCW devices.
+ */
+ if (ccw_dev) {
SCSIDevice *sd = (SCSIDevice *) object_dynamic_cast(OBJECT(dev_st),
TYPE_SCSI_DEVICE);
- VirtIONet *vn = (VirtIONet *) object_dynamic_cast(OBJECT(dev_st),
- TYPE_VIRTIO_NET);
-
- if (vn) {
- ipl->netboot = true;
- }
- if (virtio_ccw_dev) {
- CcwDevice *ccw_dev = CCW_DEVICE(virtio_ccw_dev);
-
- ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN);
- ipl->iplb.blk0_len =
- cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN);
- ipl->iplb.pbt = S390_IPL_TYPE_CCW;
- ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno);
- ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3;
- } else if (sd) {
- SCSIBus *bus = scsi_bus_from_device(sd);
- VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus);
- VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, vdev);
- CcwDevice *ccw_dev;
-
- ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw),
- TYPE_CCW_DEVICE);
- if (!ccw_dev) { /* It might be a PCI device instead */
- return false;
- }
+ if (sd) {
ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN);
ipl->iplb.blk0_len =
cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN);
ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno);
ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3;
} else {
- return false; /* unknown device */
+ VirtIONet *vn = (VirtIONet *) object_dynamic_cast(OBJECT(dev_st),
+ TYPE_VIRTIO_NET);
+
+ ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN);
+ ipl->iplb.blk0_len =
+ cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN);
+ ipl->iplb.pbt = S390_IPL_TYPE_CCW;
+ ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno);
+ ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3;
+
+ if (vn) {
+ ipl->netboot = true;
+ }
}
if (!s390_ipl_set_loadparm(ipl->iplb.loadparm)) {
ipl->iplb.flags |= DIAG308_FLAGS_LP_VALID;
}
+
return true;
}
loadparm[i] = ascii2ebcdic[(uint8_t) lp[i]];
}
+ if (i < 8) {
+ memset(loadparm + i, 0x40, 8 - i); /* fill with EBCDIC spaces */
+ }
+
g_free(lp);
return 0;
}
netboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->netboot_fw);
if (netboot_filename == NULL) {
- error_setg(errp, "Could not find network bootloader");
+ error_setg(errp, "Could not find network bootloader '%s'",
+ ipl->netboot_fw);
goto unref_mr;
}
- img_size = load_elf_ram(netboot_filename, NULL, NULL, &ipl->start_addr,
+ img_size = load_elf_ram(netboot_filename, NULL, NULL, NULL,
+ &ipl->start_addr,
NULL, NULL, 1, EM_S390, 0, 0, NULL, false);
if (img_size < 0) {
return img_size;
}
-static bool is_virtio_net_device(IplParameterBlock *iplb)
+static bool is_virtio_ccw_device_of_type(IplParameterBlock *iplb,
+ int virtio_id)
{
uint8_t cssid;
uint8_t ssid;
sch = css_find_subch(1, cssid, ssid, schid);
if (sch && sch->devno == devno) {
- return sch->id.cu_model == VIRTIO_ID_NET;
+ return sch->id.cu_model == virtio_id;
}
}
}
return false;
}
+static bool is_virtio_net_device(IplParameterBlock *iplb)
+{
+ return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_NET);
+}
+
+static bool is_virtio_scsi_device(IplParameterBlock *iplb)
+{
+ return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_SCSI);
+}
+
void s390_ipl_update_diag308(IplParameterBlock *iplb)
{
S390IPLState *ipl = get_ipl_device();
return &ipl->iplb;
}
-void s390_reipl_request(void)
+void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type)
{
S390IPLState *ipl = get_ipl_device();
- ipl->reipl_requested = true;
- qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
+ if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) {
+ /* use CPU 0 for full resets */
+ ipl->reset_cpu_index = 0;
+ } else {
+ ipl->reset_cpu_index = cs->cpu_index;
+ }
+ ipl->reset_type = reset_type;
+
+ if (reset_type == S390_RESET_REIPL &&
+ ipl->iplb_valid &&
+ !ipl->netboot &&
+ ipl->iplb.pbt == S390_IPL_TYPE_CCW &&
+ is_virtio_scsi_device(&ipl->iplb)) {
+ CcwDevice *ccw_dev = s390_get_ccw_device(get_boot_device(0));
+
+ if (ccw_dev &&
+ cpu_to_be16(ccw_dev->sch->devno) == ipl->iplb.ccw.devno &&
+ (ccw_dev->sch->ssid & 3) == ipl->iplb.ccw.ssid) {
+ /*
+ * this is the original boot device's SCSI
+ * so restore IPL parameter info from it
+ */
+ ipl->iplb_valid = s390_gen_initial_iplb(ipl);
+ }
+ }
+ if (reset_type == S390_RESET_MODIFIED_CLEAR ||
+ reset_type == S390_RESET_LOAD_NORMAL) {
+ /* ignore -no-reboot, send no event */
+ qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET);
+ } else {
+ qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
+ }
+ /* as this is triggered by a CPU, make sure to exit the loop */
+ if (tcg_enabled()) {
+ cpu_loop_exit(cs);
+ }
+}
+
+void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type)
+{
+ S390IPLState *ipl = get_ipl_device();
+
+ *cs = qemu_get_cpu(ipl->reset_cpu_index);
+ if (!*cs) {
+ /* use any CPU */
+ *cs = first_cpu;
+ }
+ *reset_type = ipl->reset_type;
+}
+
+void s390_ipl_clear_reset_request(void)
+{
+ S390IPLState *ipl = get_ipl_device();
+
+ ipl->reset_type = S390_RESET_EXTERNAL;
+ /* use CPU 0 for full resets */
+ ipl->reset_cpu_index = 0;
+}
+
+static void s390_ipl_prepare_qipl(S390CPU *cpu)
+{
+ S390IPLState *ipl = get_ipl_device();
+ uint8_t *addr;
+ uint64_t len = 4096;
+
+ addr = cpu_physical_memory_map(cpu->env.psa, &len, 1);
+ if (!addr || len < QIPL_ADDRESS + sizeof(QemuIplParameters)) {
+ error_report("Cannot set QEMU IPL parameters");
+ return;
+ }
+ memcpy(addr + QIPL_ADDRESS, &ipl->qipl, sizeof(QemuIplParameters));
+ cpu_physical_memory_unmap(addr, len, 1, len);
}
void s390_ipl_prepare_cpu(S390CPU *cpu)
if (ipl->netboot) {
if (load_netboot_image(&err) < 0) {
error_report_err(err);
- vm_stop(RUN_STATE_INTERNAL_ERROR);
+ exit(1);
}
- ipl->iplb.ccw.netboot_start_addr = ipl->start_addr;
+ ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr);
}
+ s390_ipl_set_boot_menu(ipl);
+ s390_ipl_prepare_qipl(cpu);
}
static void s390_ipl_reset(DeviceState *dev)
{
S390IPLState *ipl = S390_IPL(dev);
- if (!ipl->reipl_requested) {
+ if (ipl->reset_type != S390_RESET_REIPL) {
ipl->iplb_valid = false;
memset(&ipl->iplb, 0, sizeof(IplParameterBlock));
}
- ipl->reipl_requested = false;
}
static void s390_ipl_class_init(ObjectClass *klass, void *data)
dc->reset = s390_ipl_reset;
dc->vmsd = &vmstate_ipl;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+ /* Reason: Loads the ROMs and thus can only be used one time - internally */
+ dc->user_creatable = false;
}
static const TypeInfo s390_ipl_info = {
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